JSTL Format fmt:formatNumber Tag

The <fmt: formatNumber> tag is used to formatting the number data such as formatting numbers , currencies and percentages according to the customized formatting pattern.

The Syntax Of <fmt: formatNumber> Tag

<fmt: formatNumber attributes> body content </fmt:formatNumber >

Attributes of <fmt: formatNumber> Tag

maxFractionDigitsSpecifies the maximum number of digits in fractional portion.

Attributes	Description
value	Specifies the numeric value that has to be formatted.
type	Specifies that the value has to be formatted as number, currency or percentage.
pattern	Specifies the custom pattern to format the given value.
var	Specifies the variable name to which the value is to be formatted.
scope	The Scope into which the variable number has to be formatted.
currencyCode	Specifies the code of currency.
currencySymbol	Specifies the symbol of currency.
groupingUsed	Specifies that whether the output value is to be grouped by using comma or seperator in the output.
maxIntegerDigits	Specifies the maximum number of digits.
minIntegerDigits	Specifies the minimum number of digits.
minFractionDigits	Specifies the minimum number of digits in fractional portion.

Example

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>
<head>
<title>formatNumber Tag</title>
</head>
<body>

	<h3>Number Format:</h3>

	<c:set var="balance" value="15705.79040" />

	<p>
		Currency:
		<fmt:formatNumber value="${balance}" type="currency" />
	</p>

	<p>
		Grouping :
		<fmt:formatNumber type="number" groupingUsed="true" value="${balance}" />
	</p>

	<p>
		Max Integer Digit:
		<fmt:formatNumber type="number" maxIntegerDigits="2"
			value="${balance}" />
	</p>

	<p>
		Max Fraction Digit:
		<fmt:formatNumber type="number" maxFractionDigits="5"
			value="${balance}" />
	</p>

	<p>
		Max Integer Digits using percent:
		<fmt:formatNumber type="percent" maxIntegerDigits="3"
			value="${balance}" />
	</p>

	<p>
		Min Fraction Digits using percent:
		<fmt:formatNumber type="percent" minFractionDigits="5"
			value="${balance}" />
	</p>

	<p>
		Min Integer Digit:
		<fmt:formatNumber type="number" minIntegerDigits="2"
			value="${balance}" />
	</p>

	<p>
		Using Pattern:
		<fmt:formatNumber type="number" pattern="###.###$" value="${balance}" />
	</p>

</body>
</html>

Details of the Code

<fmt:formatNumber value=”${balance}” type=”currency”/> tag is used to display the value with currency symbol.
<fmt:formatNumber type=”number” groupingUsed=”true” value=”${balance}” /> is used to group the digits with comma and in code we have done true so there is grouping used in the digits.
<fmt:formatNumber type=”number” maxIntegerDigits=”2″ value=”${balance}” /> tag is used for maximum integer number to be displayed.
<fmt:formatNumber type=”number” maxFractionDigits=”5″ value=”${balance}” /> tag is used to display maximum fractional digit.
<fmt:formatNumber type=”percent” maxIntegerDigits=”3″ value=”${balance}” /> tag is used for maximum integer number to be displayed with percentage.
<fmt:formatNumber type=”percent” minFractionDigits=”5″ value=”${balance}” /> tag is used to display minimum fractional digit.
<fmt:formatNumber type=”number” pattern=”###.###$” value=”${balance}” /> is used to format the value in a custom pattern.

Steps for Execution

Save this file as example.jsp in your eclipse IDE.
Now select this jsp file, right mouse click and select Run as ->Run on server

Output:

When the execution process is completed successfully we will get the following output :

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The Syntax Of <fmt: formatNumber> Tag

Attributes of <fmt: formatNumber> Tag

Example

Steps for Execution

Output:

About Krishna Srinivasan

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